I cant figure out if mine is stock or aftermarket. It looks like a 3 inch pipe but I do not see any etchings from any manufacturer. I am pretty confident it is aftermarket but I think I am just going to go to a mitsu dealer, pop the hood on an EVO, and look at the stock DP if the pics dont help me.

TIA,
Pete

 

http://www.thedrunken.com/photopost/...ry.php?cat=590

There are some pics of the stock next to aftermarket.

 

Thank you!! You are the shnit!!!
Mine is definately aftermarket. Now if I can figure out which one it is. haha.